An operational definition cannot be fully disclosed to the general public because of the concerns that unethical users will take advantage of it, which may lead to a massive click fraud. However, if it is not disclosed, advertisers cannot verify or even dispute why they have been charged for certain clicks.

Google is hoping that advertisers will be placated by having SOME transparency after so much obfuscation — and advertisers certainly have a lot more information than they did before — although anything more than NOTHING is going to feel like a lot. But advertisers are still looking at click fraud through a glass darkly, and they are still essentially at the mercy of Google’s system.